Building slab



J. c. SCHLEICHER' BUILDING SLAB Filed s t. 13 1919 2 Sheet s-Sheet 1INVENTOR Jo7znv C. Sc7zZe z'cker l' f ATTORNEY J. cQ SCHLEICHER July 3,1923.

BUILDING SLAB.

' Filed Sept. 15

1919 2 Sheets-Sheet 2 lNVENTOR John 0.5071 lez'cherr %WW ATTORNEYPatented July 3, 1923.

UNITED STATES 11,450,632 PATENT OFFICE.

. JOHN SCHLEICHER, OF MOUN'I. VERNON, NEW YORK.

BUILDING SLAB.

Application filed September 18, 1918. Serial No. 823,580.

To all whom it may concern:

Be it known that I, JOHN C. Sonnnrcrmn, a citizen of the United States,residing at Mount Vernon in the county of Westchester and State of hiewYork, have invented certain new and useful Improvements in BuildingSlabs, of which the following is a specification, reference being hadtherein to the accompanying drawing.

Iy invention relates to improvements in blocks or slabs for buildingsand more particularly has reference to a hollow form of slab or sectionadapted for forming walls and partitions of buildings such for instanceas I have disclosed in my co-pending application Serial #314,354, filedJuly 30, 1919. Among other advantages in my hollow slab, it will befound that the building can be constructed with considerably lessmaterial, the slabs will be much lighter to handle and the walls of thebuilding when completed will. remain dry and permit of the passage ofpipes, wires and other equipment necessary in the construction ofdwellings, commercial buildings and similar structures.

Referring to the accompanying drawings, I have illustrated in Fig. 1 inperspective with parts broken away, a suitable form of slab embodying anapglication of my invention. Fig. 2 is a modi cation illustrating themethod of providing for a window therein and Fig. 3 another modificationshowing the arrangement of the slab providing for a door therein. Fig. 4is a perspective view partly broken away illustrating a portion oftheouter frame and shows the a plication of a metallic covering thereto.ig. 5 is a perspective view partly broken away illustratinig means forsealing the joints between a acent slabs.

3' indicates a rectangular frame with partitions 4' through whichsuitable holes such as 5 may be drilled for the passage of air, pipes,wires or other equipment used in the construction of the building. 6indicates a piece of building paper such as tar paper and 7 chicken wireor other suitable fabrication or material which may be secured throughthe paper 6 to the frame 3'4' by wire staples or the like such as 8 andthe same applies to the other side of the frame. After the frame hasthus been constructed and covered, I prepare a mixture 16 of cement andashes ofsay three parts ashes to one part of cement and then set theentire frame within an outer frame which projects above the frame of theslab a distance equal to the thickness of the cement covering which Iintend to apply. I then trowel the mixture of cement and ashes untillevel with the outer frame and before the same becomes set and hard Imix another batch of cement this time with the sand, say about 3 partssand to one part of cement. The first layer of ashes and cement may besay =3 of an inch thick while the secondlayer of cement and sand may hesay -lof an inch thick and after the first layer has been applied, Idrop the frame of my slab within the outer frame 3'-4 of an inch andthen apply the second coating, namely, the mixture of sand and cementand by a straight edge or otherwise, level it, with the top of the outerframe which of course should be mounted upon a perfectly level andhorizontal support. The troweling and weight of the cement appliedpresses the cementthrough the openings of the chicken wire or otherretaining means employed down upon the building paper which sagssufiiciently to insure a good interlocking or binding result and afterthe entire surface of my slab has thus been formed, and has set andhardened sufficiently, it is then turned upside down and the other sideis treated in the same manner, thus producing a complete rectangularslab of uniform and even proportions the outer surface of which can thenbe rubbed down with stone or other: wise treated and colored if desired.

9 indicates a suitable binding of metal which may be applied over theends and sides of the frame of the slab projecting over the surface adistance equal to about the thickness of the wall of the frame so thatwhen the cement is applied the side and end covermg become securelyfastened thereupon.

Referring now to Fig. 2, it will be observed that the interiorpartitions of the framing may be varied at one end to provide for theintroduction of a window such as 10 which may be suitably secured asshown leaving the lower half of the slab formed as illustrated in Fig.1, the outer layer of sand and cement being indicated by the referencecharacter 11 and the inner layer of cement and ashes being indicated bythe reference character 12.

In the modification shown in Fig. 3, a suitable casing 13 for the door14 may be formed in the slab as shown so that these slabs whencompletely finished may be stored in stock for use in buildings such asdescribed in my said co-pending patent application andwhen secured inposition, presenting a very finished hard surface of durableconstruction, and light to handle, which will always be dry on theinside and will facilitate the passage of wires, pipes or otherequipment therethrough for connections to fixtures within the buildingand for which reason it will be readily understood that the holes 5 ofall slabs or frames are drilledin exactly the same position so as toregister accurately to facilitate the introductlon of the e uipmentaforesaid.

Referring now to ig. 4, it will be observed that the outer frame 3' maybe covered by a metallic plate or framing 15 which may extendsufliciently beyond the edge of the same to lap over the outer covering.In practice I prefer to extend the .metallic covering or framing adistance equal to the thickness of the outer covering so that in applyinthe cement the thickness thereof is preetermined by the distance betweenthe flange 15' and the edge 3 of the said framing 3'. This provides aquick and convenient way of insuring a uniform application of thecoating of cement to the forms, serves as a protection against fire andpreserves the corners of the wooden outer frame as well as re-inforcingand stren hening the panel.

Re erring now more particularly to Fig. 5, it will be observed thatbetween the adjacent sides 3' of. adjacent sections or slabs may beprovided strips such as 1616'-16" naeaeea 18 or other suitable materialmay be orced therebetween thus forming a tight and uniform joint orinterlock between the frames of ad acentsections or slabs.

Of course, it will be understood that various modifications may be madein the construction and arrangement of parts without departing from thespirit of the invention .as claimed.

. I claim:

1. A slab of the class described comprising an interior frameworkproviding air saces, an outer framework extending s ightly beyond saidinterior framework, and a filling on each side of said frame- ;vork andbetween the same forming cement aces.

2. A slab of the class described comprising an interior framework, anouter framework extending slightly beyond the same,

and a filling between said frameworks substantially as described.

3. A slab having an interior framework, and an outer framework ofgreater depth, said outer framework U-shaped in crosssection and afilling between said frameworks substantially as described.

In testimony whereof I hereunto afix my signature in the resence of twowitnesses.

JOl -lN C. SCHLEIOHER.

Witnesses:

Macmillan C. Fonns'r, DAVID H. DOUGLASS.

